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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 745 · 40 questions
TalentJR

The fast method (Build from 10%): 10%: divide by 10. 1%: divide by 100. 5% = half of 10%, 20% = double 10%, 15% = 10% + 5%. 50% = half, 25% = half of a half.

NameDateTime takenScore ___ / 40
  1. 1.10% of 380 =
  2. 2.5% of 560 =
  3. 3.10% of 860 =
  4. 4.15% of 460 =
  5. 5.25% of 60 =
  6. 6.10% of 600 =
  7. 7.5% of 230 =
  8. 8.5% of 610 =
  9. 9.5% of 760 =
  10. 10.1% of 790 =
  11. 11.20% of 510 =
  12. 12.20% of 60 =
  13. 13.20% of 670 =
  14. 14.50% of 720 =
  15. 15.20% of 860 =
  16. 16.15% of 350 =
  17. 17.5% of 500 =
  18. 18.50% of 140 =
  19. 19.5% of 560 =
  20. 20.10% of 270 =
  21. 21.50% of 780 =
  22. 22.1% of 150 =
  23. 23.5% of 200 =
  24. 24.50% of 290 =
  25. 25.15% of 230 =
  26. 26.15% of 760 =
  27. 27.25% of 240 =
  28. 28.10% of 50 =
  29. 29.50% of 310 =
  30. 30.25% of 420 =
  31. 31.20% of 840 =
  32. 32.5% of 860 =
  33. 33.10% of 730 =
  34. 34.50% of 740 =
  35. 35.1% of 170 =
  36. 36.50% of 540 =
  37. 37.5% of 90 =
  38. 38.15% of 250 =
  39. 39.50% of 210 =
  40. 40.25% of 220 =

Answer key

  1. 38
  2. 28
  3. 86
  4. 69
  5. 15
  6. 60
  7. 11.5
  8. 30.5
  9. 38
  10. 7.9
  11. 102
  12. 12
  13. 134
  14. 360
  15. 172
  16. 52.5
  17. 25
  18. 70
  19. 28
  20. 27
  21. 390
  22. 1.5
  23. 10
  24. 145
  25. 34.5
  26. 114
  27. 60
  28. 5
  29. 155
  30. 105
  31. 168
  32. 43
  33. 73
  34. 370
  35. 1.7
  36. 270
  37. 4.5
  38. 37.5
  39. 105
  40. 55

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